Add migration for Tree

alembic/versions/20250325_131216_93df77b1_create_tree.py

@@ -0,0 +1,34 @@
+"""create trees table
+
+Revision ID: 1234567890ab
+Revises: 
+Create Date: 2023-06-08 10:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.sql import func
+
+# revision identifiers
+revision = '1234567890ab'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        'trees',
+        sa.Column('id', sa.Integer, primary_key=True, index=True),
+        sa.Column('name', sa.String, nullable=False),
+        sa.Column('species', sa.String, nullable=False),
+        sa.Column('height', sa.Integer, nullable=False),
+        sa.Column('diameter', sa.Integer, nullable=False),
+        sa.Column('location_id', sa.Integer, sa.ForeignKey('locations.id')),
+        sa.Column('created_at', sa.DateTime, default=func.now()),
+        sa.Column('updated_at', sa.DateTime, default=func.now(), onupdate=func.now())
+    )
+
+
+def downgrade():
+    op.drop_table('trees')